Infinix Smart 20 vs Xiaomi 15 Ultra
The Infinix Smart 20 (2026) runs on the MediaTek Helio G81 Ultimate, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $149 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 33/100 (a 52-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5200); the main camera is 8 MP vs 50 MP; the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 358,383); the Infinix Smart 20 is thinner (7.7mm vs 9.4mm).
Infinix Smart 20
Xiaomi 15 Ultra
- Cheaper at launch: $149 vs $999
- Better portability (68/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 358383
- Better Geekbench Single: 3050 vs 432
- Better Geekbench Multi: 10200 vs 1416
- Bigger battery: 6000 vs 5200 mAh
- Faster charging: 90W vs 15W
- Better main camera: 50MP vs 8MP
- Higher performance (92/100 vs 30/100)
- Better camera (87/100 vs 10/100)
- Longer battery life (80/100 vs 48/100)
- Better display (90/100 vs 55/100)
Comparing the Infinix Smart 20 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 52 points higher (85/100 vs 33/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 30/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 10/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 48/100). Value score: Infinix Smart 20 — 42/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (92/100 vs 30/100). In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (90/100 vs 55/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (87/100 vs 10/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (80/100 vs 48/100). In the "portability" category, the Infinix Smart 20 significantly outperforms the Xiaomi 15 Ultra (68/100 vs 29/100).
| Specification | Infinix Smart 20 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | MediaTek Helio G81 Ultimate | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 358383 | 3030376 | |
| Geekbench Single | 432 | 3050 | |
| Geekbench Multi | 1416 | 10200 | |
| Display | 6.8" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | 1576x720 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5200 mAh | 6000 mAh | |
| Charging | 15W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 8 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 8 MP | 32 MP | |
| RAM | 4GB | 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 700 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 167.7×78.8×7.7 mm | 161.3×75.3×9.4 mm | |
| Weight | — | 225 g | |
| Launch price | $149 | $999 |
Infinix Smart 20
- Main: 8MP f/f/2.0
- Front: 8MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Infinix Smart 20
- 6.8" IPS LCD
- Resolution: 1576x720
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Infinix Smart 20
- 5200 mAh
- Wired: 15W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Infinix Smart 20 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Infinix Smart 20 by 88.2% in our overall performance rating.
Launch price difference: $850. Infinix Smart 20 was $850 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (92/100 vs 30/100).
display
In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (90/100 vs 55/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (87/100 vs 10/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 (80/100 vs 48/100).
portability
In the "portability" category, the Infinix Smart 20 significantly outperforms the Xiaomi 15 Ultra (68/100 vs 29/100).
Which is better: the Infinix Smart 20 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the Infinix Smart 20 by 52 points (85/100 vs 33/100).
What is the rating of the Infinix Smart 20 and the Xiaomi 15 Ultra?
The Infinix Smart 20 has a MobileRank rating of 33/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Infinix Smart 20 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 10/100).
Which is more powerful: the Infinix Smart 20 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 30/100).
Should you choose the Infinix Smart 20 over the Xiaomi 15 Ultra?
The Infinix Smart 20 is a better fit for everyday use. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.